Vulnerability · Published Sep 15, 2021 · Assigned by GitHub_M

CVE-2021-39215Authentication Bypass: Forged Tokens Allow Access to Arbitrary Rooms

High 7.5

In plain English

A high-severity improper authentication in jitsi-meet from jitsi. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.2%top 30.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Jitsi Meet is an open source video conferencing application. In versions prior to 2.0.5963, a Prosody module allows the use of symmetrical algorithms to validate JSON web tokens. This means that tokens generated by arbitrary sources can be used to gain authorization to protected rooms. This issue is fixed in Jitsi Meet 2.0.5963. There are no known workarounds aside from updating.

Affected products (as reported)

Vendor	Product	Versions
jitsi	jitsi-meet	< 2.0.5963

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/jitsi/jitsi-meet/security/advisories/GHSA-45ff-37jm-xjfx x_refsource_CONFIRM
https://github.com/jitsi/jitsi-meet/pull/9319 x_refsource_MISC